Thats a good idea and it may get people to actually write their details on them.
I work in baggage tracing and you would be amazed how often we have bags which have had baggage tags come off but have name tags on them with no name written on.

Heres a quick tip for you all if you dont want to loose any baggage on your travels.
Write your name,address, phone number and flight details on a sheet of paper and put it INSIDE your bag so that if one of use baggage tracers need to ”on hand” it we wont have to go all the way through your underwear just to find some sort of ID.